Oil burner



Feb. 20, 1934. A. HOFSTATTER 1,948,420

OIL BURNER Filed Aug. 4, 1932 Patented Feb 20, 1934 lvi'rso srATEs PATENT OFFICE Associated Oil Burner 100., Ina,

Conn, acorporation Hartford,

Application August 4,1932. Serial No. 627,511

2 Claims, (c1. 158-87) The present invention consists of an oil burner especially adapted for use in stoves, or ranges and has for an object to utilize a vaporizerwholly outside of the burner assembly, but in 5 communication therewith to permit the burner assembly to be initially heated, after which vaporizatiori of the oil is immediately effected upon feeding of the oil into the vaporizer.

Another object of the invention is to provide an. oil burner in which the vaporization of the oil is effected in a period of time with an almost complete absence of carbon deposits, the vaporizer being so positioned however, that in the event of the accumulation of carbon deposits after protracted use of the burner access can be readily gained thereto for cleaning.

In oil burners wherein the vaporization takes place within the confines of the burner assembly, it has been found that definite carbon deposits form in a relatively short period of time, requir lug disassemblage of the burner and use of tools for the removal of the deposits. With the present burner, the vaporizer may be cleaned without removing the chimneys or other parts of the superstructure of the burner, thereby permitting the burner to be continuously operated.

Other objects of the invention will be apparent from the following description of the present preferred form thereof, taken in connection with the accompanying drawing, wherein Fig. 1 is a vertical sectional view of a burner, constructed in accordance with the present in vention;

Fig. 2 is a top plan view thereof, showing the superstructure of the burner removed; and

digit is a plan view of the cover used for the central storage chamber of the burner.

The burner of the present invention consists of an assembly, generally designated 4, which includes a base upon which a superstructure is mounted.- The base embodies a series of concentric fuel grooves 5, in each of which a wick 5' is mounted. A vapor distribution chamber 6 is formed in the center of the burner base. The distribution chamber is in communication with the inner groove through passageways or ducts '2, while the inner and outer grooves are in communication through passageways or ducts 8. I have in the present instance, shown three passageways or ducts extending radially from the chamber 6, but it is to be understood that this number may be increased or diminished if desired. Circumscribing the vapordistribution chamber 6 are a plurality of air vents 9 which, as. shown to advantage in Fig. 1 of the drawing, ex-

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tend throughout the vertical extent of the burner base. It will also be noted upon reference to the drawing, that the fuel grooves 5 are spaced to provide air passageways 10, the grooves being connected only by the Walls of the ducts 8, which .5 walls span the distance between the two grooves shown in the drawing.

Rising upwardly from the burner base are a plurality of chimneys 11 of conventional design, one of said chimneys being mounted on each side of the fuel grooves, as shown in Fig. l of the drawing. The innermost chimney has a detachable cover 12. superimposed thereon, while the adjacent chimneys, between the fuel grooves 5, are equipped with a detachable closure 13 to 3 serve as an air baflie for the air passageways 10.

Of especial importance in the present invention is a vaporizer herein employed, which is generally designated 14 and in the present instance is shown to consist of a substantially semi-circular well or font peripherally located on the outer of the fuel grooves 5, as shown in the drawing. The vaporizer is provided in the bottom thereof with an opening 15 into which is screwthreaded one end of what is known in the art as 30 a carbon leg 16, said carbon leg being provided with a laterally extending connection 17,

into which one end of a fuel feed pipe 18 is detachably mounted. The bottom of the carbon leg 16 is provided with a detachable cap 19 to permit 35 the removal of residue in a manner well known in the art. The opening 15 is preferably at one terminal of the vaporizer 14, the opposite terminal opening into the outer fuel groove through an orifice 20. As is shown in Fig. 1 of the draw- '90 ing, the bottom wall of the orifice 20 is preferably at a point above the bottom of the vaporizer 14. The vaporizer is equipped with a cap 21 which 1 latter is detachable and may be secured to the vaporizer in any desired manner which will prevent the casual displacement thereof while the burner is in use.

For the purpose of confining the vapor in the distribution chamber 6, I provide a closure plate 22 therefor; the plate being provided with radial lugs 23, which fit over the passageways or ducts .7 between the air vents 9. It will be noted that theplate 22 is countersunk in the burner base and of course,.may be expeditiously removed in an apparent manner.

In the use of the device, oil is first introduced through the pipe 18 into the carbon leg 16 and thence into the vaporizer 14, after which the oil A flows from the vaporizer, through the opening 20, into the fuel grooves 5, to saturate the wicks 5. 110

When this operation is consummated, the oil is 'cut off from the feed pipe 18 and the wicks 5 lighted to thereby heat or prime the burner base. After the burner has been heated to the desired temperature, the oil is permitted to again flow into the vaporizer 14, which has now been heated and hence, vaporization of the oil immediately takes place and the vapor is permitted to pass from the vaporizer through the opening 20 and then into the fuel grooves 5 and distribution chamber 6. It will be noted that the vaporizer 14 is in direct communication with the distribution chamber 6 in order that the vapor can pass uninterruptedly into said chamber and from there supply the fuel grooves at different points through the ducts or passageways 7 and 8. The vapor is confined in the chamber by means of the closure plate 22. I have found it preferable to form the ducts or passageways 7 and 8 so that the bottoms thereof will underlie the bottoms of the fuel grooves 5 and in this manner the Wicks 5 are elevated so as to permit only part of the wicks to be impinged by the vapor passing from the vaporizer into the central chamber 6.

It is to be understood that although the vaporizer 14 is shown to be of substantially semispherical configuration and covering only a relatively small area of the burner base, nevertheless the size and shape of the vaporizer may be changed within the scope of the appended claims. It is of the essence of importance in the present invention, however, that the vaporizer be wholly outside the burner base in order to be conveniently accessible and to heat that portion of the base expeditiously with which the oil first comes in contact. Furthermore, it is to be understood that although I have in the drawing shown only a single burner and vaporizer, such burners asthat herein shown may be used in pairs in stoves or ranges and when so used, the Vaporizers are arranged to lie in proximity to oneanother, in order that each burner will derive the benefit of the heat from the adjacent burner.

It is to be understood, of course, that various changes in the construction, proportion'and arrangement of parts of this invention may be made, within the scope of the appended claims.

What is claimed is:

1. An oil burner including a burner base embodying a central vapor distributing chamber and space concentric vapor grooves communicating with each other and with the chamber, an open top vaporizer formed on the external wall of the outer groove and in direct communication with said distributing chamber, a removable closure plate for the vaporizer and an oil inlet pipe lead ing into the bottom of the vaporizer,

2. In combination with a burner base including communicating vapor grooves and a vapor distributing chamber communicating with the grooves, and an open top peripheral vaporizer on the base, the bottom of which is appreciably below the bottom of said grooves and chamber, saic raporizer opening into the distributing chamber, and a removable closure plate for the vaporizer.

ALLEN HOFS'IA'I'TER. 

